Shelf



FIG. 1 is a top plan view of the shelf showing my new design, one end of the frame being shown broken away for clarity of illustration;

FIG. 2 is a rear elevational view thereof;

FIG. 3 is a front elevational view thereof;

FIG. 4 is a bottom plan view thereof;

FIG. 5 is a side elevational view thereof;

FIG. 6 is a sectional view taken in the direction of the arrows on lines VI--VI of FIG. 4. 

The ornamental design for a shelf, as shown. 